CN211180361U

CN211180361U - Zoom projection lens adjusting device

Info

Publication number: CN211180361U
Application number: CN201922323704.3U
Authority: CN
Inventors: 王俊强; 王军帅; 崔光举; 张义宾
Original assignee: Nanyang Zhaoqiang Precision Photoelectric Co ltd
Current assignee: Nanyang Zhaoqiang Precision Photoelectric Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-08-04
Anticipated expiration: 2029-12-23

Abstract

The utility model discloses a zoom projection lens adjusting device, including focusing ring, focusing lens cone, stop collar and locating part, fixedly connected with locating part on the inner wall of stop collar, be provided with the spacing groove on the outer wall of focusing lens cone, the spacing groove is the equidistant distribution that sets up of annular as the benchmark with the central point of focusing lens cone, the stop collar passes through the spacing groove butt that sets up on locating part and the focusing lens cone, fixedly connected with focusing ring on the outer wall at the rear portion of focusing lens cone, fixedly connected with lens on the anterior inner wall of focusing lens cone, shell fragment in the locating part passes through binding nail and stop collar fixed connection, the shell fragment passes through cylinder and stop collar butt. The utility model discloses a series of structures such as focusing ring, focusing lens cone, stop collar and locating part that set up for this device has solved zooming projection lens of present projecting apparatus and has not possessed limit function, leads to zooming projection lens to run burnt not enough easily at the in-process that uses.

Description

Zoom projection lens adjusting device

Technical Field

The utility model relates to a projection display equipment technical field specifically is a projection lens adjusting device zooms.

Background

The projector is also called as a projector, and is a device capable of projecting images or videos onto a curtain, and can be connected with a computer, a VCD, a DVD, a BD, a game machine, a DV, and the like through different interfaces to play corresponding videos, the projector is widely used in homes, offices, schools, and entertainment places at present, and the projector can be classified into a home theater type, a portable business type projector, an educational conference type projector, a mainstream engineering type projector, a professional theater type projector, a measurement projector, and the like according to application environments.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

An object of the utility model is to provide a projection lens adjusting device zooms to solve the problem that proposes among the above-mentioned background art.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a zoom projection lens adjusting device, includes focusing ring, focusing lens cone, stop collar and locating part, its characterized in that: the focusing lens barrel is characterized in that a limiting part is fixedly connected to the inner wall of the limiting sleeve, a limiting groove is formed in the outer wall of the focusing lens barrel, the limiting groove is distributed in an annular equidistant mode on the basis of the central point of the focusing lens barrel, the limiting sleeve is abutted to the limiting groove formed in the focusing lens barrel through the limiting part, a focusing ring is fixedly connected to the outer wall of the rear portion of the focusing lens barrel, and lenses are fixedly connected to the inner wall of the front portion of the focusing lens barrel.

Preferably, the inner wall of the rear part of the focusing lens barrel is connected with a third zoom lens barrel in a screwing manner, the inner wall of the rear part of the third zoom lens barrel is connected with a second zoom lens barrel in a screwing manner, and the inner wall of the rear part of the second zoom lens barrel is connected with the first zoom lens barrel in a screwing manner.

Preferably, the stop collar is fixedly connected with the first shell and the fourth shell, the first shell is fixedly connected with the fourth shell, and the front ends of the first shell and the fourth shell are fixedly connected with the second locking cover.

Preferably, the outer walls of the front parts of the first shell and the fourth shell are sleeved with light shields, and the first shell and the second shell are in sliding connection with the left side of the focusing ring.

Preferably, the right side of the focusing ring is slidably connected with a second shell and a third shell, the second shell is fixedly connected with the third shell, and the rear ends of the second shell and the third shell are fixedly connected with a first locking cover.

Preferably, the inner side surface of the first locking cover is slidably connected with the first zoom lens barrel, and the outer side surface of the first zoom lens barrel is fixedly connected with the connecting piece.

Preferably, the limiting part comprises a cylinder, an elastic sheet and a fastening nail, the elastic sheet is fixedly connected with the limiting sleeve through the fastening nail, the tail end of the elastic sheet is fixedly connected with the cylinder, and the cylinder is abutted against the limiting sleeve.

(III) advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that: the device can prevent the problem of coke leakage in the use process through a series of structures such as the focusing ring, the focusing lens barrel, the limiting sleeve, the limiting part and the like, improve the stability of the focusing lens barrel, greatly improve the practical performance of the projection equipment, effectively prevent external parasitic light from injecting into the zooming projection lens through the arranged light shield, further avoid the phenomenon that the picture dazzles when the projection equipment is used, greatly improve the hand feeling when a user rotates the focusing ring by arranging the anti-skid vertical lines on the outer wall of the focusing ring, effectively prevent the situation that the focusing ring can skid when rotating, enhance the firmness among the first shell, the second shell, the third shell and the fourth shell through the arranged first locking cover and the second locking cover, and ensure that the elastic sheet can slide on the inner wall of the limiting sleeve through the cylinder after being extruded by the focusing lens barrel by installing the cylinder at the tail end of the elastic sheet, the elastic sheet can be extended easily.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the present invention;

fig. 3 is a front structural schematic view of the focusing lens barrel, the limiting sleeve and the limiting member of the present invention;

fig. 4 is a schematic structural diagram of a position limiting element in fig. 3 according to the present invention.

The reference numbers in the figures are: 1. a first housing; 2. a focusing ring; 3. a second housing; 4. a first zoom lens barrel; 5. a connecting member; 6. a first locking cover; 7. a second zoom lens barrel; 8. a third zoom lens barrel; 9. a third housing; 10. a focus lens barrel; 11. a fourth housing; 12. a limiting sleeve; 13. a second locking cover; 14. a light shield; 15. a lens; 16. a limiting member; 17. a cylinder; 18. a spring plate; 19. a limiting groove; 20. and (6) fastening nails.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, an embodiment of the present invention is shown; a zoom projection lens adjusting device comprises a focusing ring 2, a focusing lens barrel 10, a limiting sleeve 12, a limiting piece 16 and the like, wherein the limiting piece 16 is fixedly installed on the inner wall of the limiting sleeve 12, the limiting sleeve 12 is a bearing part of the limiting piece 16, the limiting piece 16 can limit the focusing lens barrel 10, a limiting groove 19 is formed in the outer wall of the focusing lens barrel 10, the limiting groove 19 enables the focusing lens barrel 10 to be used as a clamping groove abutted against the limiting piece 16, the limiting groove 19 is distributed in an annular equidistant mode by taking the central point of the focusing lens barrel 10 as a reference, the limiting sleeve 12 is abutted against the limiting groove 19 formed in the focusing lens barrel 10 through the limiting piece 16, so that the limiting sleeve 12 can limit the focusing lens barrel 10 through the limiting piece 16, the zoom projection lens is prevented from being burnt, the stability of the focusing lens barrel 10 is improved, the focusing ring 2 is fixedly installed on the outer wall of the rear portion of the focusing, further, the focal length of the zoom projection lens is changed, and the lens 15 is fixedly mounted on the inner wall of the front part of the focusing lens barrel 10, and the lens 15 can collect light.

Further, the inner wall of the rear portion of the focus lens barrel 10 is connected with the third zoom lens barrel 8 in a screwed manner, the focus lens barrel 10 can drive the third zoom lens barrel 8 to rotate, the inner wall of the rear portion of the third zoom lens barrel 8 is connected with the second zoom lens barrel 7 in a screwed manner, the third zoom lens barrel 8 can drive the second zoom lens barrel 7 to rotate, the inner wall of the rear portion of the second zoom lens barrel 7 is connected with the first zoom lens barrel 4 in a screwed manner, and the second zoom lens barrel 7 can drive the first zoom lens barrel 4 to rotate.

Further, stop collar 12 and first shell 1 and fourth shell 11 fixed mounting for stop collar 12 has fine stability, can not be driven rotatoryly by focusing lens cone 10, first shell 1 and fourth shell 11 fixed mounting, first shell 1 and fourth shell 11 are the anterior protective housing of projection lens that zooms, the front end and the second of first shell 1 and fourth shell 11 lock lid 13 fixed mounting, second lock lid 13 can strengthen the firm performance between first shell 1 and the fourth shell 11.

Further, the cover is equipped with lens hood 14 on the anterior outer wall of first shell 1 and fourth shell 11, lens hood 14 can effectually block during external light source jets into the projection lens that zooms, the projection lens that zooms has been avoided producing and has been dazzled light, first shell 1 and second shell 3 and focusing ring 2's left side clearance fit slidable mounting, focusing ring 2 rotates the messenger and can not lead to the fact the influence to first shell 1 and second shell 3, be provided with anti-skidding vertical lines on focusing ring 2's the outer wall simultaneously, can promote the user and rotate the feeling when focusing ring 2, the condition of skidding probably appears when effectual preventing to rotate focusing ring 2.

Further, the right side of focusing ring 2 and second shell 3 and the clearance fit slidable mounting of third shell 9, focusing ring 2 rotates and makes can not cause the influence to second shell 3 and third shell 9, second shell 3 and the fixed mounting of third shell 9, second shell 3 and third shell 9 are the protective housing at zoom projection lens rear portion, the rear end and the first locking lid 6 fixed mounting of second shell 3 and third shell 9, first locking lid 6 can strengthen the firm performance between second shell 3 and the third shell 9.

Furthermore, the inner side surface of the first locking cover 6 is in clearance fit and sliding installation with the first zoom lens cone 4, so that the first locking cover 6 can support the first zoom lens cone 4, the first zoom lens cone 4 is prevented from being suspended, the service life of the device is prolonged, the outer side surface of the first zoom lens cone 4 is fixedly provided with a connecting piece 5, and the connecting piece 5 is a part for connecting and fixing the zoom projection lens and the projection equipment.

Further, the locating part 16 is by cylinder 17, parts such as shell fragment 18 and tighting pin 20 are constituteed, shell fragment 18 passes through tighting pin 20 and stop collar 12 fixed mounting, tighting pin 20 can fix shell fragment 18 on stop collar 12, shell fragment 18 can carry out the butt to the spacing groove 19 of focusing lens section of thick bamboo 10, and then realize spacing focusing lens section of thick bamboo 10 through shell fragment 18, the end and the cylinder 17 fixed mounting of shell fragment 18, cylinder 17 and stop collar 12 butt, and then make shell fragment 18 when receiving focusing lens section of thick bamboo 10's extrusion, accessible cylinder 17 slides on the inner wall of stop collar 12, be favorable to shell fragment 18 to extend.

The working principle is as follows: when in use, the connecting piece 5 in the device is screwed and fixed with the projection equipment, then the projection equipment is started to start projection, when the projection device starts to play the boot animation, the user can rotate the focusing ring 2 to drive the focusing lens barrel 10, the third zoom lens barrel 8 is driven by the focusing lens barrel 10, the second zoom lens barrel 7 is driven by the third zoom lens barrel 8, then the first zoom lens barrel 4 is driven by the second zoom lens barrel 7, so as to change the focal length of the zoom projection lens, meanwhile, the focusing lens barrel 10 continuously extrudes the limiting piece 16 in the rotating process, after the focal length adjustment of the focusing lens barrel 10 is completed, the elastic sheet 18 in the limiting member 16 springs into the limiting groove 19 of the focusing lens barrel 10 under its own elasticity, thereby limiting the focusing lens barrel 10, the light shield 14 can effectively prevent stray light from entering the zoom projection lens when the projection apparatus performs projection.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a zoom projection lens adjusting device, includes focusing ring (2), focusing lens cone (10), stop collar (12) and locating part (16), its characterized in that: fixedly connected with locating part (16) on the inner wall of stop collar (12), be provided with spacing groove (19) on the outer wall of focusing lens cone (10), spacing groove (19) use the central point of focusing lens cone (10) to be the equidistant distribution that sets up of annular as the benchmark, stop collar (12) are through locating part (16) and the spacing groove (19) butt that sets up on focusing lens cone (10), fixedly connected with focusing ring (2) on the outer wall at the rear portion of focusing lens cone (10), fixedly connected with lens (15) on the inner wall of the front portion of focusing lens cone (10).

2. A zoom projection lens adjustment apparatus according to claim 1, wherein: the inner wall of the rear part of the focusing lens cone (10) is connected with a third zoom lens cone (8) in a screwing mode, the inner wall of the rear part of the third zoom lens cone (8) is connected with a second zoom lens cone (7) in a screwing mode, and the inner wall of the rear part of the second zoom lens cone (7) is connected with a first zoom lens cone (4) in a screwing mode.

3. A zoom projection lens adjustment apparatus according to claim 1, wherein: stop collar (12) and first shell (1) and fourth shell (11) fixed connection, the front end and second locking lid (13) fixed connection of first shell (1) and fourth shell (11).

4. A zoom projection lens adjustment apparatus according to claim 3, wherein: the outer wall of the front parts of the first shell (1) and the fourth shell (11) is sleeved with a light shield (14), and the first shell (1) and the second shell (3) are in sliding connection with the left side of the focusing ring (2).

5. A zoom projection lens adjustment apparatus according to claim 1, wherein: the right side of focusing ring (2) and second shell (3) and third shell (9) sliding connection, second shell (3) and third shell (9) fixed connection, the rear end and first locking lid (6) fixed connection of second shell (3) and third shell (9).

6. A zoom projection lens adjustment apparatus according to claim 5, wherein: the inner side surface of the first locking cover (6) is in sliding connection with the first zoom lens cone (4), and the outer side surface of the first zoom lens cone (4) is fixedly connected with a connecting piece (5).

7. A zoom projection lens adjustment apparatus according to claim 1, wherein: the limiting piece (16) comprises a cylinder (17), an elastic sheet (18) and a fastening nail (20), the elastic sheet (18) is fixedly connected with the limiting sleeve (12) through the fastening nail (20), the tail end of the elastic sheet (18) is fixedly connected with the cylinder (17), and the cylinder (17) is abutted to the limiting sleeve (12).